11570501213 has 4 divisors (see below), whose sum is σ = 11883217500. Its totient is φ = 11257784928.

The previous prime is 11570501209. The next prime is 11570501249. The reversal of 11570501213 is 31210507511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10297581529 + 1272919684 = 101477^2 + 35678^2 .

It is a cyclic number.

It is not a de Polignac number, because 11570501213 - 2² = 11570501209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11570501413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156358088 + ... + 156358161.

It is an arithmetic number, because the mean of its divisors is an integer number (2970804375).

Almost surely, 2^11570501213 is an apocalyptic number.

It is an amenable number.

11570501213 is a deficient number, since it is larger than the sum of its proper divisors (312716287).

11570501213 is an equidigital number, since it uses as much as digits as its factorization.

11570501213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312716286.

The product of its (nonzero) digits is 1050, while the sum is 26.

The spelling of 11570501213 in words is "eleven billion, five hundred seventy million, five hundred one thousand, two hundred thirteen".